How can we filter a JTable in Java?

A JTable provides a very flexible possibility to create and display tables. The TableModel interface defines methods for objects that specify the contents of a table. The AbstractTableModel class is typically extended to provide a custom implementation of a model table. A JTable class provides the ability to edit tables using the method setCellEditor() allows an object of the TableCellEditor interface.

We can filter a table using the setRowFilter() method of TableRowSorter class.

Example

import java.awt.*; import java.awt.event.*; import java.util.regex.*; import javax.swing.*; import javax.swing.table.*; public class FilterTableTest extends JFrame {    private JTable table;    private TableModel model;    public FilterTableTest() {       setTitle("FilterTable Test");       Object rows[][] = {{"Adithya", "Content Developer", 25000}, {"Jai", "SME", 30000},  {"Chaitanya", "Java Engineer", 45000}, {"Ramesh", "Scala Developer", 40000}, {"Ravi", "SAP  Consultant", 70000}};       Object columns[] = {"Name", "Designation", "Salary"};       model = new DefaultTableModel(rows, columns) {          public Class getColumnClass(int column) {             Class returnValue;             if((column >= 0) && (column < getColumnCount())) {                returnValue = getValueAt(0, column).getClass();             } else {                returnValue = Object.class;             }             return returnValue;          }       };       table = new JTable(model);       final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);       table.setRowSorter(sorter);       add(new JScrollPane(table), BorderLayout.CENTER);       JPanel panel = new JPanel(new BorderLayout());       JLabel label = new JLabel("Filter");       panel.add(label, BorderLayout.WEST);       final JTextField filterText = new JTextField("");       panel.add(filterText, BorderLayout.CENTER);       add(panel, BorderLayout.NORTH);       JButton button = new JButton("Filter");       button.addActionListener(new ActionListener() {          public void actionPerformed(ActionEvent e) {             String text = filterText.getText();             if(text.length() == 0) {                sorter.setRowFilter(null);             } else {                try {                   sorter.setRowFilter(RowFilter.regexFilter(text));                } catch(PatternSyntaxException pse) {                      System.out.println("Bad regex pattern");                }              }          }       });       add(button, BorderLayout.SOUTH);       setSize(400, 300);       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);       setLocationRelativeTo(null);       setVisible(true);    }    public static void main(String args[]) {       new FilterTableTest();    } }

Output